You might give the M&P Shield, Walther PPS and Springfield XDS a look. They are striker-fired, which isn't the same as DAO, but it takes more to fire one of those than a single action. They are slim and, being polymer-framed, they are light. The Shield and PPS are available in either 9mm or .40, and the XDS is a .45.
"An armed society is a polite society." Robert A. Heinlein
"After a shooting spree, they always want to take the guns away from the people who didn't do it. I sure as hell wouldn't want to live in a society where the only people allowed guns are the police and the military."
William S. Burroughs